Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0024623 (gastric cancer)
 36,219 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

To clarify host and environmental factors for gastric carcinogenesis, we obtained information about gastric cancer mortality in Babol, in the North of Iran, and recruited 130 participants aged 30-80 years from the general population of Babol in 2004. A urea breath test, assessment of IgG antibodies to Helicobacter pylori, a pepsinogen test, a marker of chronic atrophic gastritis, and determination of urinary excretions of sodium and potassium were performed. Diet and lifestyle information was also obtained using a questionnaire. The stomach cancer mortality rate for men in Babol (38.2/10(5)) was found to be somewhat lower than that for Japanese men (45.1/10(5)), while the mortality for women (26.9/10(5)) was higher than for Japanese women (20.9/10(5)). Positive rates for the urea breath test were 77.5 and 81.8% for Iranian men and women, respectively. Helicobacter pylori IgG antibodies were present in 68.7 and 73.7% of Iranian men and women, respectively, both values being marginally higher than for Japanese. We also found 51.0 and 52.8% to be positive for a pepsinogen test, significantly higher than the Japanese values. Urinary excretions of salt and potassium in this population appeared approximately the same as the consumption in Japanese. The elevated gastric cancer mortality in both men and women in Babol seems, by and large, to be related to higher H. pylori infection rates and prevalence of chronic atrophic gastritis. Certain factors, including H. pylori DNA diversity, host factors and their interactions, together with the level of medical practice, prevalence of and access to secondary prevention of stomach cancer, may also be associated with the relatively high mortality.
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PMID:Host and environmental factors for gastric cancer in Babol, the Caspian Sea Coast, Iran. 1741 89

A multiple-unit-type oral floating dosage form (FDF) of 5-fluorouracil (5-FU) was developed to prolong gastric residence time, target stomach cancer, and increase drug bioavailability. The floating bead formulations were prepared by dispersing 5-FU together with calcium carbonate into a mixture of sodium alginate and hydroxypropyl methylcellulose solution and then dripping the dispersion into an acidified solution of calcium chloride. Calcium alginate beads were formed, as alginate undergoes ionotropic gelation by calcium ions and carbon dioxide develops from the reaction of carbonate salts with acid. The evolving gas permeated through the alginate matrix, leaving gas bubbles or pores, which provided the beads buoyancy. The prepared beads were evaluated for percent drug loading, drug entrapment efficiency, image, surface topography, buoyancy, and in vitro release. The formulations were optimized for different weight ratios of gas-forming agent and sodium alginate. The beads containing higher amounts of calcium carbonate demonstrated instantaneous, complete, and excellent floating ability over a period of 24 hours. The optimized formulation was subjected to in vivo antitumor studies to check the therapeutic efficacy of the floating dosage forms containing 5-FU against benzo(a)pyrene-induced stomach tumors in albino female mice (Balb/C strain). The multiple-bead FDF was found to reduce the tumor incidence in mice by 74%, while the conventional tablet dosage form reduced this incidence by only 25%. Results indicate that FDF performed significantly better than the simple tablet dosage form.
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PMID:Stomach-specific drug delivery of 5-fluorouracil using floating alginate beads. 1762 5

Midkine (MK), a heparin-binding growth factor, is expressed highly in various malignant tumors, so it acts as attractive therapeutic target. In the present study, we used siRNA targeting MK to downregulate human MK expression in human gastric cancer cell line BGC823 and SGC7901 so as to determine the advantages of this anticancer therapeutic. The cell proliferation was evaluated by a WST-8 (4-[3-(2-methoxy-4-nitrophenyl)-2-(4-nitrophenyl)-2H-5-tetrazolio]-1, 3-benzene disulfonate sodium salt) assay and colony formation assay. Apoptosis was determined by flow cytometer analysis and colorimetric assay. Our results showed that the BGC823 and SGC7901 cell growth were significantly inhibited by knockdown of MK gene. The loss of mitochondrial membrane potential, release of cytochrome c from the mitochondria into cytosol and increased activity of caspase-3, 8 and 9 occurred concomitantly with inhibition of MK gene. These results indicated that siRNA targeting MK gene can inhibit gastric cancer cells growth and induce apoptosis via mitochondrial depolarization and caspase-3 activation. MK siRNA may be a promising novel and potential therapeutic strategy for the treatment of gastric cancers.
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PMID:siRNA targeting midkine inhibits gastric cancer cells growth and induces apoptosis involved caspase-3,8,9 activation and mitochondrial depolarization. 1766 17

This case involved a 38-year-old man who was referred to our hospital with general fatigue, appetite loss, weight loss, cough and exertional dyspnea. Within a couple of days, he was admitted due to advanced dyspnea and general fatigue. Severe hypoxemia was identified and acute right heart failure developed on admission. Treatment was initiated using oxygen, antibiotics and heparin sodium, but the patient died of sudden cardiopulmonary arrest 30 h after admission. Autopsy revealed advanced gastric cancer and widespread tumor embolism together with fibrocellular intimal proliferation and thrombus formation in the small arteries. Pulmonary tumor thrombotic microangiopathy (PTTM) with gastric cancer was diagnosed. PTTM is characterized by widespread fibrocellular intimal proliferation of the small pulmonary arteries and arterioles in patients with metastatic carcinoma. Microscopic pulmonary tumor emboli frequently occur in patients with malignant tumors, but very few cases of PTTM have been reported. PTTM should be considered in the differential diagnosis of acute dyspnea or pulmonary hypertension. In cases of acute cor pulmonal, the existence of malignant cells can be examined using pulmonary arterial wedge aspiration cytology where feasible, in addition to positron emission tomography with F-2-deoxy-2-fluoro-D-glucose, which can be used to investigate certain primary tumors and associated metastatic disease. The suitability of gastroendoscopy to screen for malignancies should be examined.
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PMID:[Pulmonary tumor thrombotic microangiopathy caused by signet ring cell carcinoma in gastric cancer]. 1768 68

Endoscopic mucosal resection (EMR) has been widely used for endoscopic treatment. Its indication is generally limited to mucosal tumors less than 2 cm in size. Further investigation revealed the criteria for minimal risk of lymph node metastasis even in tumors larger than 2 cm in size. However, using EMR technique, it is difficult to resect such large tumors en bloc, which is required for accurate pathological examination. EMR en bloc was performed to treat such tumors endoscopically, but problems remained because of the reportedly higher recurrence rate after ward. Endoscopists desired to develop a new technique for reliable endoscopic en bloc resection for various lesions, so endoscopic submucosal dissection (ESD) emerged. Several kinds of endoknives for ESD were developed, and submucosal injections of sodium hyarulonate were used to achieve longlasting mucosal elevation, so the ESD procedures capable of resecting larger lesions or lesions with scarring was established. Thus, the indications for endoscopic treatment have expanded. ESD has become widespread in Japan within only a few years, but there are hardly any reports about long-term results. Recently, it was reported that ESD was significantly superior to EMR in terms of the remnant or recurrence rate in the treatment of early gastric cancer. However, further investigation of the long-term results is warranted in early gastric cancers and other gastrointestinal cancers.
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PMID:[From EMR to ESD]. 1768 95

A 69-year-old male was diagnosed with rheumatoid arthritis(RA) in 1994. Good control of the RA activity had been obtained with sodium aurothiomalate (GST). However, polyarthritis reappeared in January 2003. He was examined at the Division of Rheumatology, Department of Internal Medicine, Saitama Social Insurance Hospital in August 2003. The treatment was switched from GST to salazosulfapyridine (SASP), with improvement of the polyarthritis. Subsequently, in March 2005, the patient developed fever, pancytopenia and liver dysfunction, and was admitted to Saitama Social Insurance Hospital. Since these abnormalities were suspected to be caused by SASP, this drug was stopped and prednisolone (PSL) was started at 10 mg/day. However, since the fever, pancytopenia and liver dysfunction persisted, bone marrow examination was performed and the patient was diagnosed with acute lymphoblastic leukemia (pre B cell type, L2). He was transferred to the Division of Hematology, Omiya Medical Center, Jichi Medical University, on 8(th) April, 2005 for induction chemotherapy. Although the induction therapy needed to be stopped because the patient developed dysphagia and biliary system dysfunction, complete remission (CR) was confirmed. It was difficult to restart chemotherapy in the patient because his general condition remained poor, with repeated episodes of aspiration pneumonia and newly detected stomach cancer. He was, therefore, transferred back to Saitama Social Insurance Hospital on 28(th) September, 2005. The ALL remained in CR and the RA activity had disappeared without therapy, but the patient died of pneumonia on 1(st) August, 2006.
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PMID:[A case of rheumatoid arthritis with acute lymphoblastic leukemia]. 1817 75

Chronic inflammation increases cancer risk. While it is clear that cell signaling elicited by inflammatory cytokines promotes tumor development, the impact of DNA damage production resulting from inflammation-associated reactive oxygen and nitrogen species (RONS) on tumor development has not been directly tested. RONS induce DNA damage that can be recognized by alkyladenine DNA glycosylase (Aag) to initiate base excision repair. Using a mouse model of episodic inflammatory bowel disease by repeated administration of dextran sulfate sodium in the drinking water, we show that Aag-mediated DNA repair prevents colonic epithelial damage and reduces the severity of dextran sulfate sodium-induced colon tumorigenesis. Importantly, DNA base lesions expected to be induced by RONS and recognized by Aag accumulated to higher levels in Aag-deficient animals following stimulation of colonic inflammation. Finally, as a test of the generality of this effect we show that Aag-deficient animals display more severe gastric lesions that are precursors of gastric cancer after chronic infection with Helicobacter pylori. These data demonstrate that the repair of DNA lesions formed by RONS during chronic inflammation is important for protection against colon carcinogenesis.
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PMID:DNA damage induced by chronic inflammation contributes to colon carcinogenesis in mice. 1852 Nov 88

Paclitaxel(referred to hereinafter as PTX )is used in ovarian cancer, non-small cell lung cancer, breast cancer, gastric cancer, and endometrial cancer with positive treatment result reports. However, severe allergic reactions such as decreases in blood pressure and impaired breathing occur with relatively high frequency. For the prevention of such allergic reactions, administration of a premedication composed of the three components, dexamethasone sodium phosphate injection, diphenhydramine hydrochloride tablet, and ranitidine hydrochloride injection solution(or injectable famodine), is advised in the appended documentation. Administration is difficult because, among these three components, only diphenhydramine hydrochloride is administered orally and thus must be provided through the internal medicine department. Particularly when this combined dosage is administered as outpatient chemotherapy, the doctor must prescribe diphenhydramine hydrochloride tablets, and the patient must not forget to bring them on the day in which chemotherapy is administered. Also, checks by the medical staff such as pharmacists and nurses are required, complicating the administration of this therapy further. Taking this situation into consideration, our hospital uses a short-time premedication method wherein d-Chlorpheniramine Maleate injections are substituted for diphenhydramine hydrochloride tablets, and the time required for premedication is reduced to 15 minutes. This study investigated the allergic reaction ratio to consider the safety and usefulness of the short-time premedication method used at our hospital. The chemotherapy regimens conducted for the subject patients were 9 cases of PTX+CBDCA, 6 cases of biweekly- PTX, and 5 cases of weekly-PTX. A total of 67 PTX injections were given, 15 of them being first-time administrations. The ratio of allergic/hypersensitivity reactions was 10.0%(2 cases in 20). The short-time premedication method using d-Chlorpheniramine Maleate injections did not display a significant difference from the conventional method used for prevention of allergic and hypersensitivity reactions. Also, since this method of medication proves useful for is easy for the patient, reduces treatment time, is safe, economical, and helps reduce the workload of doctors, pharmacists, and nurses.
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PMID:[Evaluation of short-time premedication with d-chlorpheniramine maleate injection for paclitaxel-induced hypersensitivity reaction]. 1870 46

We prepared an anticancer drug based on a pH-sensitive liposome retaining Fe-porphyrin as an SOD mimic. The liposomes contained cationic/anionic lipid combinations and were composed of Fe-porphyrin, 1,2-dimyristoyl-sn-glycero-3-phosphatidylcholine, dimethylditetradecylammonium bromide, sodium oleate, and Tween-80. The Fe-porphyrin was released from the liposome at low pH, and the cytotoxicity for cancer cells by the liposome depended on the acidic environments of the endosomes in the cells. Furthermore, although the liposome exhibited an excellent anticancer effect on a gastric cancer cell line, the SOD activity of Fe-porphyrin was shown to have a significant influence on the cytotoxicity toward cancer cells. These findings suggest that the pH-sensitive liposome retaining the Fe-porphyrin as an SOD mimic promises to be a novel anticancer drug for endosomal escape.
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PMID:Preparation of pH-sensitive liposomes retaining SOD mimic and their anticancer effect. 1877 54

A 53-year-old man with mitochondrial disease underwent gastrectomy because of gastric cancer. Three days after the surgery, he developed severe hyponatremia (Na, 106 mmol l(-1)) together with hypovolemic shock and lactic acidosis. Despite the hyponatremia, his urine sodium concentration was high, suggesting renal salt wasting. Although mitochondrial diseases are not common and hyponatremia in patients with these diseases is not well known, clinicians should pay close attention to serum sodium levels and maintain them properly.
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PMID:Severe hyponatremia occurring after surgical stress in a patient with mitochondrial disease. 1992 72


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